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    <title>plzr</title>
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    <center>Scilab Function</center>
    <div align="right">Last update : April 1993</div>
    <p>
      <b>plzr</b> -  pole-zero plot</p>
    <h3>
      <font color="blue">Calling Sequence</font>
    </h3>
    <dl>
      <dd>
        <tt>plzr(sl)   </tt>
      </dd>
    </dl>
    <h3>
      <font color="blue">Parameters</font>
    </h3>
    <ul>
      <li>
        <tt>
          <b>sl</b>
        </tt>: list ( <tt>
          <b>syslin</b>
        </tt>)</li>
    </ul>
    <h3>
      <font color="blue">Description</font>
    </h3>
    <p>
    produces a pole-zero plot of the linear system
    <tt>
        <b>sl</b>
      </tt> (<tt>
        <b>syslin</b>
      </tt> list)</p>
    <h3>
      <font color="blue">Examples</font>
    </h3>
    <pre>

s=poly(0,'s');
n=[1+s   2+3*s+4*s^2        5; 0        1-s             s];
d=[1+3*s   5-s^3           s+1;1+s     1+s+s^2      3*s-1];
h=syslin('c',n./d); 
plzr(h);
 
  </pre>
    <h3>
      <font color="blue">See Also</font>
    </h3>
    <p>
      <a href="../control/trzeros.htm">
        <tt>
          <b>trzeros</b>
        </tt>
      </a>,&nbsp;&nbsp;<a href="../polynomials/roots.htm">
        <tt>
          <b>roots</b>
        </tt>
      </a>,&nbsp;&nbsp;<a href="../elementary/syslin.htm">
        <tt>
          <b>syslin</b>
        </tt>
      </a>,&nbsp;&nbsp;</p>
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